A new universal simplified adhesive: 6-month clinical evaluation

Area of Science:

• Dental materials science
• Adhesive dentistry
• Clinical research

Background:

• Multimode adhesives offer versatility (etch-and-rinse or self-etch) but lack clinical data.
• Evaluating new universal adhesives is crucial for restorative dentistry.

Purpose of the Study:

• To assess the 6-month clinical efficacy of Scotchbond Universal Adhesive (SU) in noncarious cervical lesions (NCCLs).
• To compare two distinct clinical evaluation criteria (FDI and USPHS) for restorative materials.

Main Methods:

• A 6-month clinical study involving 39 patients and 200 restorations in NCCLs.
• Four bonding strategies were tested: SU with etch-and-rinse (moist/dry dentin) and selective/full self-etch.
• Restorations were evaluated using FDI and USPHS criteria at baseline and 6 months.

Main Results:

• Minimal restoration loss (4/200) and marginal discoloration (1/200) were observed at 6 months.
• USPHS criteria showed high success rates for marginal adaptation (198/200).
• FDI criteria revealed higher percentages of "bravo" scores for marginal adaptation across all groups (32-46%).

Conclusions:

• Scotchbond Universal Adhesive shows reliable clinical performance in NCCLs at 6 months.
• The bonding strategy did not significantly impact the clinical behavior of the multimode adhesive.
• FDI criteria are more sensitive for detecting subtle changes in marginal adaptation compared to USPHS criteria.